There are 6 different Workhorse color towels, each with a specific use.Green: Exterior DetailingWipe & Buff Off Detail Spray, Wax, Sealants, Glazes, and PolishesUsing Waterless WashesMatches with Eco-Friendly ProductsEasy To See Impurities like Dirt & GrimeYellow: Interior DetailingWiping down dashboards, door panels, steering wheels and navigation panesUpholstery Detailing; wiping off grime/light scrubbingLight color to see true cleaning resultsWipe off excess dressing on rubber and vinylTan: Leather, Vinyl & Synthetic LeatherWiping down real or synthetic leather from dirt and grimeApply Leather Cleaner, Conditioner, Serum and Quick DetailerBuff off excess dressing from vinyl and leatherMatches the color of premium Chemical Guys leather productsBlack: Plastic, Rubber and Vinyl TrimClean extra dirty parts of vehicle: undercarriage, tires, suspension and wheel linersEngine bay cleaningBuffing off excess tire dressingDark color won't show dirt over timeDedicate for dirty areas onlyGray: MetalMetal cleaningPolishing metal rims, chrome, stainless steel and aluminumBuffing chrome exhaust tips, diamond plate and chrome bumpersSilver to match metal colorBlue: Glass CleaningDedicated for glass cleaningGreat for interior and exterior useClean clear optical plastics, glass, mirrors and navigation screens*Avoids dirt from towels with oil to prevent streakingVisit the Chemical Guys Store on Amazon to see our entire Arsenal; find Pro Tips, Special Promotions, and New Product Launches; Link at the top of the page, Click Follow!Works safely on all automotive vehicle brands including: Acura, Audi, BMW, Buick, Cadillac, Chevrolet (Chevy), Chrysler, Dodge, Fisker, Ford, GMC, Honda, Hummer, Hyundai, Infiniti, Isuzu, Jaguar, Jeep, Kia, Land Rover, Lexus, Lincoln, Mazda, Mercedes, Mercury, Mini, Mitsubishi, Nissan, Pontiac, Porsche, RAM, Saab, Subaru, Tesla, Toyota, Volkswagen, and Volvo; RV brands like Coachmen, Entegra, Forest River